Challenges of integration of blockchain into internet of things (IoT): A survey.

The Internet of Things(IoT) has changed the world into a smart and autonomous world. The way in which we interact with each other and with the environment has changed.The IoT is experiencing exponential growth in research and industry, but still suffers from privacy and security issues. The integration of blockchain technology with Internet of Things (IoT) has resolved many challenges faced by Internet of Things (IoT) such as decentralization, poor interoperability, privacyand security vulnerabilities. Blockchain when combined with IoT can solve many challenges of IoT systems. This integration will come out to be the better system for the environment in many aspects specially security which is the most important aspect to be considered. Also, the distributed ledger of Blockchain which when used in IoT can resolve many issues like scalability and authenticity. However, the integration of Blockchain technology with IoT originates various challenges like storage capacity and scalability, security, anonymity and data privacy etc. We first introduce Blockchain with Internet of Things (IoT) and key characteristic of this integration. We will also concentrate the issued resolved by blockchain technology in Internet of Things (IoT). The main concern of this paper is to discuss the various challenges of integration of blockchain into IoT. [ABSTRACT FROM AUTHOR]